Twist Surface

Used to twist a B-spline surface, or a mesh element, about a defined axis.

You can access this tool from the following:

Note: Increasing the number of control points will yield smoother results.

Setting	Description
Fixed Twist Angle	If on, sets the angle that the surface is twisted about the defined axis.
Infinite	If on the surface will be twisted beyond the length of the axis or below the starting point of the defined axis.

Key-in: EDIT TWIST